71745959616 has 112 divisors (see below), whose sum is σ = 194550182400. Its totient is φ = 23327695872.

The previous prime is 71745959599. The next prime is 71745959711. The reversal of 71745959616 is 61695954717.

It is a self number, because there is not a number n which added to its sum of digits gives 71745959616.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1230450 + ... + 1287438.

It is an arithmetic number, because the mean of its divisors is an integer number (1737055200).

Almost surely, 2^71745959616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71745959616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97275091200).

71745959616 is an abundant number, since it is smaller than the sum of its proper divisors (122804222784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71745959616 is a wasteful number, since it uses less digits than its factorization.

71745959616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57166 (or 57156 counting only the distinct ones).

The product of its digits is 14288400, while the sum is 60.

The spelling of 71745959616 in words is "seventy-one billion, seven hundred forty-five million, nine hundred fifty-nine thousand, six hundred sixteen".